UNIVERSIDAD NACIONAL DEL ALTIPLANO – PUNO FACULTAD CIENCIAS AGRARIAS ESCUELA PROFESIONAL INGENIERIA AGRONÓMICA
24-6-2015
INFORME DE PRÁCTICAS Almacenamiento de papa en condiciones de luz difusa
CURSO: TUBEROSAS Y RAICES DOCENTE: ing. Juan Larico Vera PRESENTADO POR:
Cabana Monzon Walter Elias SEMESTRE: 2015 – I CODIGO: 120036 PUNO – PERU 2015
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INFORME DE PRÁCTICAS ALMACENAMIENTO DE PAPA EN CONDICIONES CONDICIO NES DE LUZ DIFUSA INFORME NO 004 AL ING : Juan Larico Vera De : Cabana Monzón Walter Elias Asunto : Informe de prácticas almacenamiento de papa en condiciones de luz difusa Curso : Cultivo de tuberosas y raices Fecha: 24/06/15
ÍNDICE
Introducción……………..……………………………………………………………………………………….2 Objetivos…………………..……………………………………………………………………………………….3 Marco teórico y conceptual ……..…………………………………………………………………………3 Materiales y Métodos ………………..…………………………………………………………………….. 26 Resultados………………………………………………………………………………………………………26 Conclusiones…………………………………………………………………………………………………...26 Recomendaciones……………………………………………………………………………………………26 Bibliografia…………………………………………………………………………………………………….. 27 Anexos…………………………………………………………………………………………………………… 28
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I. INTRODUCCIÓN En los andes de la sierra del Perú, y particularmente en la zona de intervención del proyecto de emergencia por fenómenos climatológicos, los agricultores que se dedican al cultivo de la papa, manejan la conservación de la semilla en forma tradicional. Este sistema hace que los tubérculos almacenados no se encuentren en condiciones fisiológicas favorables, lo que trae como consecuencia que su calidad sea afectada el cual se manifiesta en la baja calidad de las plantas que se generan de estas semillas y por lo tanto en bajos rendimientos.
FUNDAMENTACIÒN La aplicación de una tecnología de conservación de semilla es de importancia, pues permite mantener el tubérculo semilla en condiciones optimas de almacenamiento, lo cual favorece a un desarrollo vigoroso y uniforme de los brotes dando lugar a una mejor emergencia de la papa después de la siembra; y, por lo tanto una mejor calidad sanitaria, mejor desarrollo del cultivo; el cual beneficia directamente en el incremento incremento de la producción. En el camino hacia una seguridad alimentaria de nuestros beneficiarios, se plantean estas alternativas, como otras, las cuales son técnicamente viables, y duraderas, que posibilitan y aportan a la sostenibilidad del proyecto de intervención.
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II . OBJETIVOS Conservar la papa que será utilizada como semilla en buenas condiciones (luz, temperatura) con la finalidad que la papa se verdee y tenga brotes gruesos y cortos, en lugares donde no se dispone de mucha madera. Ubicar un espacio de terreno plano cercano a la casa del agricultor. En la parte inferior de las tarimas se debe construir una canaleta para el agua quedará humedad al mbiente. Delimitar un area y construir una base o cimiento. Su interior se construye con materiales de la zona, tarimas de madera, caña o palos dañados o cañas a dos dedos o 3 centímetros entre ellos. Continuar construyendo las paredes del almacén con adobe dejando espacios para las ventanas. Proteger con malla para evitar la entrada de insectos. La ventana facilita la entrada del aire y la penetración de la luz.
PRINCIPIO La papa semilla se almacena en tarimas en ambientes ventilados y con luz difusa. Las construcciones de barro aseguran un buen control de la temperatura y conservación de los tubérculos. III . MARCO TEÓRICO Y CONCEPTUAL TECNICAS DE ALMACENAMIENTO Y CONSERVACION DE PAPA NATIVA Son sistemas de conservacion conservacion de los tuberculos tuberculos semilla-consumo con minimas perdidas debido a la respiracion, respiracion, transpiracion y a la la brotacion brotacion contando con una buena infraestructura bajo condiciones ambientales.
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DIFERENCIA ENTRE ENTRE PAPAS NATIVAS PARA SEMILLA Y PARA CONSUMO
A• PAPAS PARA SEMILLA SEMILLA
1. Se producen para usar como Alimento. semilla. 2. Se debe de producir en terrenos o parcelas sanas, libre de enfermedades y plagas del suelo, que al infectar o infestar los tubérculos, pueden contaminar a otras parcelas cuando se usan como semilla. 3. El follaje de las plantas deben estar libre de enfermedades que se transmiten a los tubérculos. 4. El tamaño adecuado para semilla, es de categoría segunda o tercera (40 a 80 g.). 5. Debe estar verdeada por la luz difusa, para que tenga más tolerancia al ataque de plagas y enfermedades. 6. Debe tener brotes cortos y vigorosos necesarios para que puedan desarrollar plantas fuertes robustos en el campo.
B• PAPAS PARA CON SUMO
1. Se producen para usar como Alimento 2. Se pueden producir en parcelas con baja infestación de enfermedades y plagas, pero se debe controlar aquellas que causan daños visibles en los tubérculos que desmerecen su calidad y dificultan su comercialización. 3. Las enfermedades del follaje deben ser controladas para evitar la reducción de los rendimientos. 4. El tamaño de papa es grande, de categoría primera a más (80 gr. a más). 5. Debe mantener su color natural. La papa verdeada es amarga y no sirve para el consumo. 6. No debe tener brotes, porque estos disminuyen su calidad para la venta.
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• ALMACENAMIENTO Y CONSERVACION
Es el cuidado que se le da a la papa por un periodo de tiempo despues de la cosec3a, lo cual debe efectuarse en condiciones 6ptimas. Deben mostrar mostrar buena calidad visual y sensorial; es decir, Vcalidad comercialW, que esten bien conservados, de color brillante (blancas, (blancas, amarillas, rosadas, etc.); mostrar uniformidad, firmeza, libre de dafios causados por insectos, dafios por golpes y no debe 3aber tierra ad3erida en los tuberculos.
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a. Es reducir al maAimo las perdidas de agua del tuberculo producido producido por la respiraci6n, transpiraci6n y brotaci6n.
ALMACENAMIENTO ALMACENAMIENTO DE TUBERCULOS-SEMILLA TUBERCULOS-SEMILLA Como se debe seleccionar las semillas para un buen almacenamiento? La semilla de papa debe tener un tamafio uniforme, un tuberculo debe entrar en el pufio de la mano de una persona adulta. Si tenemos tenemos una balanza la muestra de papa para semilla, debe pesar pesar de 40 a 60 gramos.
a. Los tuberculos de papa deben estar completamente sanos y deben tener buena presentaci6n (buenos ojos); es decir, no no deben estar agusanados por la polilla ni gorgojo, etc.
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b. Es importante verificar las caracteristicas propias de las variedades a utilizar.
Como se debe preparar el lugar de almacenamiento?
a. Luego debemos humear con plantas de fuerte olor como: el eucalipto, mufia, paico, chachacoma, ajenjo, santa maria etc. agregandole las pepas del aji o rocoto, para alejar a las plagas del lugar de almacenamiento. b. Las tuberculos - semillas, deben almacenarse en un lugar donde este bastante luz, pero no debe llegarle los rayos solares directamente a los tuberculos, eso se llama luz difusa
IMPORTANTE: Que hacer en caso de tener semillas de tamano Grande? Una semana antes de la siembra debes realizar lo siguiente:
Desinfectar el Cuchillo con agua jabonosa. Con este cuchillo desinfectado cortamos la semilla
dos
tres partes
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Procedimiento del corte.
Soluci6n jabonosa
Desinfecci6n de cuchillo
Corte de tuberculos en dos partes
Sistema de Almacenamiento para Semilla de Papa Nativa.
Almacenamiento en Phina.Para almacenar la semilla, primeramente se prepara en una esquina de un ambiente como una especie de nido, poniendo en la base del suelo una capa de mufia, luego una capa de paja, sobre ella se pone las semillas, semillas, y en la misma semilla se espolvorea con cal, esto se repite repite hasta terminar de colocar la semilla.
Almacenamiento de tuberculos- semilla en phina
Almacenamiento en Trojes o Huecos.-
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el almacenamiento de tuberculos- semillas, ya que permite manejar por separado, las variedades y categorias en un mismo almacen.
Foto: Almacen de luz difusa de tuberculos semilla de papa (Fuente: Cip Camacani).
IMPORTANTE: El almacenamiento bajo luz difusa resulta ventajoso realizarla, porque verdea los tuberculos produciendo, brotes cortos, cortos, gruesos y vigorosos, lo cual garantiza una emergencia uniforme de plantas en el campo.Para que los tuberculos-semilla, tengan efecto uniforme de la luz difusa, se debe almacenar en las bandejas 15 y 20 cm de altura, como máximo
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Factores a Considerar para la Conservacien de Tuberculos- Semilla de Papa. Durante el Desarrollo del Cultivo 1.Sanidad.- Es importante observar en el campo los niveles de ataque de plagas y enfermedades, para obtener tuberculos sanos que resistan el periodo de almacenamiento.
Campo de cultivo cultivo de papa nativa. nativa.
2. Estado de Madurez del Cultivo.
El cultivo debe alcanzar su madurez total (madurez fisiol6gica), asi la piel de los
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3. Daños Mecanicos Durante del Periodo del Cultivo Cult ivo Evitar lesiones lesiones durante todo el proceso productivo, por el uso inadecuado herramientas y maquinaria agricola agricola en las labores culturales.
de
Cosecha de papa nativa
4. Condiciones de Suelo en el Momento de la Cosecha Es recomendable cosechar cuando el suelo no este muy hTmedo ni muy seco, 6sea en condiciones 6ptimas, asi evitar el dafio a los tuberculos.
ALMACENAMIENTO ALMACENAMIENTO DE PAPA PARA PARA CONSUMO
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Se debe almacenar en una habitaci6n oscura, con buena ventilaci6n asi los tuberculos no se verdearan.
El lugar lugar de almacenamiento,
Antes de almacenar debemos escoger los tuberculos dafiados, agusanados, apolillados, cortados y con otros defectos, que puedan contagiar a los tuberculos sanos.
Los tuberculos de papa destinados para el consumo humano, se almacenan en tarimas o en montones en el suelo y debemos usar plantas plantas repelentes para las plagas, como: mufia, eucalipto, santa maria, maria, ajenjo entre otros, colocando en la
debe estar limpio y desinfectado.
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Cuando se almacena en el suelo, es importante colocar en la base adobes de 15 cm de altura y luego se colocan palos en forma de parrilla cubierta con mufia, eucalipto, paja y asegurando asegurando siempre buena ventilaci6n. ventilaci6n. La ruma de papa no debe pasar de 1 metro de altura.
Se recomienda que las papas grandes siempre deben ir al fondo o en la base, las papas medianas deben quedar encima con la finalidad de que no se malogren.
SISTEMA DE ALMACENAMIENTO: 1.Almacenamiento al Aire Libre: a. Almacenamiento tipo Collona.- Una vez culminada la cosecha inmediatamente se
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b.Almacenamiento tipo Parva y Silo (en montones). Existen dos modalidades: - Sobre el nivel del suelo (al ras del piso). - Bajo el Nivel del suelo (hoyos). Los silos y parvas se establecen en lugares secos y sin riesgo de inundación. Sus dimensiones pueden variar desde 1.8 - 2.7 m de ancho por 0.7 - 1 m de alto. Se estima que un silo de 2.7 m de ancho puede almacenar 1 tonelada de papas por cada metro de longitud.
Almacenamiento tipo parva sobre el nivel nivel del suelo
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2.Almacenamiento Bajo Techo: a.Almacenamiento por trojas.Consiste en que los tubérculos estén en un ambiente oscuro y sin ventilación, estos son amontonados en una esquina del cuarto pegados hacia la pared sobre una cama de paja (ichu) y por encima, se cubre con paja (ichu). Es la principal forma de almacenamiento en la mayoría de las comunidades.
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Cajas transportables para almacenamiento de papas.
c.Almacenamiento por Apilamiento.consiste en almacenar sobre tarimas de madera en sacos; es necesario mantener el
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Papas con gorgojo de los andes.
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Para ambas formas de almacenamiento de papa, (Semilla y Consumo) un buen sistema de almacenamiento, además de ser económicamente accesible a los productores, debe permitir: Reducir las pérdidas por transpiración, respiración y minimizar la propagación de enfermedades y plagas.
✓
✓
Mantener el sabor, olor y color en caso de papa para consumo
Para las papas de consumo, el sistema de almacenamiento debe permitir una oscuridad total para evitar el verdeo del producto.
✓
En el caso de papa para semilla, el sistema debe permitir el acceso de la luz difusa o indirecta, para verdear la papa y favorecer el desarrollo de brotes numerosos, cortos y vigorosos. ✓
COMPORTAMIENTO DE LOS TUBÉRCULOS EN ALMACÉN
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Se impide el contagio y la penetración de enfermedades causantes de pudrición.
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Un almacén es una infraestructura física adecuada y/o acondicionada, donde se depositan y conservan los tubérculos de papa por un tiempo determinado y, debe reunir las siguientes condiciones:
Ubicación: Debe ubicarse en un lugar adecuado que tenga las mejores condiciones, lejos de zonas de contaminación por ejemplo: letrinas, basurales, corrales de animales, etc. ✓
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REQUERIMIENTOS PARA ALMACENAR SEMILLA Y PAPA DE CONSUMO CO NSUMO Requerimientos
Tubérculos-Semilla
Consumo
Optima de 6 a 12 °C para De 8 a 10 °C., para que haya periodos cortos de hasta menor formación de tres meses de azúcares en el tubérculo y almacenamiento. para reducir el
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•Efectuar visitas de inspección periódicas.
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IX . ANEXOS